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Dan Albert bab814f330 Add a showcommands function to envsetup.
This is similar to the old `m showcommands`, but operates on specific
output paths instead and does not require a build aside from the
initial invocation of soong to generate the ninja files. The
`--regenerate` option is accepted that causes the ninja file to be
regenerated first, but this is not the default because it is slow.
Just note that without this flag results may be stale.

It unfortunately doesn't work for everything in out. For example,
`$OUT/system/lib/libc.so` won't work because it is a symlink that
isn't in the build graph, but `$OUT/system/lib/bootstrap/libc.so`
works.

Test: showcommands out/target/product/walleye/system/lib/libz.so
Bug: None
Change-Id: I4cfded3db994044870fc71ae4bcf9a69224b1e15
2020-09-16 16:20:59 -07:00
common Change use of sanity-check to "test". Makes comment line more clear what the code does. 2020-07-30 22:11:58 +00:00
core Merge "HOST_CROSS_OS/ARCH can be configured to linux_bionic/arm64" 2020-09-14 03:41:47 +00:00
packaging Fix creating _dist_<goal> targets under !dist 2018-10-21 08:56:27 -07:00
target Merge "Disable sparse image for GSI products" 2020-09-11 08:17:49 +00:00
tests Only set TARGET_PLATFORM version in lunch when explicitly requested 2017-05-01 14:26:40 -07:00
tools Merge changes I4a43604b,I7200f5f9,If3402a0a 2020-09-11 05:46:48 +00:00
.gitignore Add build subprojects to .gitignore 2015-07-23 13:18:47 -07:00
Changes.md Require required modules to exist 2020-08-06 06:41:09 +00:00
CleanSpec.mk Merge "Do not include CellBroadcastLegacy for Go devices" into rvc-dev am: 99e317ce2d 2020-06-19 06:00:10 +00:00
Deprecation.md Obsolete unused module types 2020-04-18 21:00:18 -07:00
OWNERS Merge "Update OWNERS for version_defaults.mk with pscovanner & lubomir Bug: 141272605" into qt-dev am: 5d0a024d7b am: 479c9c549b 2019-10-16 11:30:32 -07:00
README.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
Usage.txt Remove the PRODUCT-* goal 2019-07-29 14:27:04 -07:00
buildspec.mk.default Add TARGET_PLATFORM_VERSION to lunch 2017-03-23 09:44:08 -07:00
envsetup.sh Add a showcommands function to envsetup. 2020-09-16 16:20:59 -07:00
help.sh Add modules partition. 2020-09-09 15:00:02 -07:00
navbar.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
rbesetup.sh Unset USE_GOMA when using RBE. 2020-08-26 05:47:33 -04:00
tapasHelp.sh Remove unused mips workarounds. 2020-03-06 16:46:59 -08:00

README.md

Android Make Build System

This is the Makefile-based portion of the Android Build System.

For documentation on how to run a build, see Usage.txt

For a list of behavioral changes useful for Android.mk writers see Changes.md

For an outdated reference on Android.mk files, see build-system.html. Our Android.mk files look similar, but are entirely different from the Android.mk files used by the NDK build system. When searching for documentation elsewhere, ensure that it is for the platform build system -- most are not.

This Makefile-based system is in the process of being replaced with Soong, a new build system written in Go. During the transition, all of these makefiles are read by Kati, and generate a ninja file instead of being executed directly. That's combined with a ninja file read by Soong so that the build graph of the two systems can be combined and run as one.